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TI-2026-19234 Aliases CVE-2026-23876

Heap buffer overflow with attacker-controlled data in XBM parser

Priority MEDIUM 44CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 2 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-122 and the CVSS impact.

Summary

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability in the XBM image decoder (ReadXBMImage) allows an attacker to write controlled data past the allocated heap buffer when processing a maliciously crafted image file. Any operation that reads or identifies an image can trigger the overflow, making it exploitable via common image upload and processing pipelines. Versions 7.1.2-13 and 6.9.13-38 fix the issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00678 52nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial ImageMagick (ImageMagick): 7.1.2-13, 6.9.13-38Red Hat: 1 advisoryRed Hat: 2 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ImageMagickImageMagickbefore 7.1.2-13; before 6.9.13-387.1.2-13, 6.9.13-38Patch availableCNA
  • ImageMagick VendorImageMagick Affected before 7.1.2-13; before 6.9.13-38 Fixed in 7.1.2-13, 6.9.13-38 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*before 6.9.13-38; 7.0.0-0 to before 7.1.2-13VulnerableImageMagick
  • cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:* Versions before 6.9.13-38; 7.0.0-0 to before 7.1.2-13 Vulnerable ·ImageMagick

Remediation

  • Fix · CNA ImageMagick (ImageMagick) Fixed in 7.1.2-13, 6.9.13-38

Red Hat 1 advisory

  • RHSA-2026:3058 Released 2026-02-23 · Red Hat rating Important
    ImageMagick security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) ImageMagick-6.9.10.68-10.el7_9, ImageMagick-6.9.10.68-10.el7_9.ppc, ImageMagick-c++-6.9.10.68-10.el7_9 +1
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) ImageMagick-c++-6.9.10.68-10.el7_9, ImageMagick-c++-6.9.10.68-10.el7_9.ppc, ImageMagick-c++-devel-6.9.10.68-10.el7_9 +4

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2026:3058
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2026:3058

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-23876
  2. 2026-10-06 EPSS moved to the 50th–90th percentile

References

Exploit 1

Patch 1

  • TI-2016-03144 The (1) EPHEMERAL, (2) HTTPS, (3) MVG, (4) MSL, (5) TEXT, (6) SHOW, (7) WIN, and (8) PLT… KEVCVSS 3.1HIGH 8.4
  • TI-2023-16996 Improper input validation in ImageMagick CVSS 3.1CRITICAL 9.8
  • TI-2016-03148 The (1) HTTP and (2) FTP coders in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1… KEVCVSS 3.1MEDIUM 5.5
  • TI-2016-03145 The EPHEMERAL coder in ImageMagick before 6.9.3-10 and 7.x before 7.0.1-1 allows remote… KEVCVSS 3.1MEDIUM 5.5
  • TI-2025-35690 ImageMagick BlobStream Forward-Seek Under-Allocation CVSS 3.1CRITICAL 9.8
  • TI-2025-33094 ImageMagick has Stack Buffer Overflow in image.c CVSS 3.1CRITICAL 9.8
See all 888 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences